Question

The height of a cone is 15 cm. If its volume is 1570 cm’, find the radius of the base.
(Use π= 3.14)​

Answer 1

Answer:

it this answer heelpful to you

Answer 2

Given:

Volume of cone = 1570cm

To find:

radius of the base.

.•♫•♬•Solution•♬•♫•.

We know that

$</p><p>Volume \: of \: Cone = \frac{1}{2} \pi {r}^{2} h$

According to question

$= > \frac{1}{2} \pi {r}^{2} h = 1570 {cm}^{3}$

$\frac{1}{3} \times 3.14 \times {r}^{2} \times 15 = 1570 {cm}^{2}$

$= > 1 \times 3.14 \times {r}^{2} \times 5 = 1570 {cm}^{2}$

$= > 3.14 \times {r}^{2} \times 5 = 1570$

$= > {r}^{2} = \frac{1570}{3.14 \times 5}$

$= > {r}^{2} = 100$

$= > r = \sqrt{100}$

$= > r = 10cm$

Hence The value of Radius is10cm